Why is my iPad Air 3rd gen data rate slower than my iPhone 7 Plus on T-Mobile's network? While my residence doesn't acquire band 71 (600 mHz), it does seem to get band 12 (700 mHz). Nonetheless, my iPhone 7 Plus manages to outspeed my Ipad Air 3rd generation in terms of data received. I'm using the Ookla applications on my iPhone and iPad to measure data. In any case, regardless of where I'm located my iPhone outdoes my iPad Air.